1			3		6
				4	6
	7					5	1
1	5					3
		3	2
	4		8			7

Difficulty: Very easy (0)

	3
	8	1	4
6						7
		8	2		4
		6		5	7
	2						6
				2	5	6
						3

Difficulty: Very easy (0)

			4	1	7
			7	4		5
						2
		5			8		6
4		6			5
	7
	6		1	2
		7	3	6

Difficulty: Super easy (0)

		2	1			4	6
							7
						8
5				4	1
		1	5				4
	4
1
8	5			7	2

Difficulty: Very easy (0)